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When an electric field of 800Vm -1is applied to a semiconductor the electrons are found to have a drift velocity of 7.5mms -1. What is the mobility of the electrons? If the effective mass of the electrons is 0.06m0 what is the mean time between collisions? If the free electron density is 2.5x10 23 m-3 what is the conductivity of the semiconductor?
define and explain the fitt principles and the pros principles. in your explanation be sure to address why these
A hypothetical radioactive isotope hass a half-life of 10,000 years. if the ration of the radioactive parent to stable daughter product is 1:3, how old is the rock containing the radioactive material?
what role does health education play in effective environmental health programs? choose a campaign or program from the
Mr. Lovebird, an 84-year old man suffering from Stage IV lung cancer, is in the ICU, following surgery to remove the malignant mass in his brain. Although Dr. Kutup was able to completely remove the mass, Mr. Lovebird suffered a cardiac arrest dur..
please respond to one of the following questions regarding assessment factors in multicultural and economically diverse
1. if a coin is tossed 5 times and comes up heads all five times the probability of obtaining tails on the 6th toss is
Do you think that the reproductive roles of males and females influences gender roles? For example, is the notion that the females "take care of the babies" influenced by the fact that females give birth?
When a troubling condition is piggybacking on a well-established problem, it means that?
List the scales of atmospheric motion from largest to smallest and give an example of each. From what you know about the various types of wind systems, are the size and duration related?
list and discuss the common agents associated with waterborne disease outbreaks and approaches to prevention of such
Do you believe the stability of the air is more likely to change rapidly near the surface or aloft?
despite the best efforts of psychologists psychiatrists and medical researchers psychological disorders appear to be as
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